WO2019181250A1

WO2019181250A1 - Base station, terminal device, method, program, and computer-readable non-temporary recording medium

Info

Publication number: WO2019181250A1
Application number: PCT/JP2019/004167
Authority: WO
Inventors: 奕江; 丸田　靖; 尚二木
Original assignee: 日本電気株式会社
Priority date: 2018-03-22
Filing date: 2019-02-06
Publication date: 2019-09-26
Also published as: US20210111752A1

Abstract

[Problem] To improve communication in a wireless access network. [Solution] A first base station according to an aspect of the present invention is provided with: an information acquisition unit which acquires hopping pattern control information relating to a pattern of frequency hopping for a terminal device; and a first communication processing unit which transmits the hopping pattern control information to a second base station.

Description

Base station, terminal device, method, program, and computer-readable non-transitory recording medium

The present invention relates to a base station, a terminal device, a method, a program, and a computer-readable non-transitory recording medium.

In LTE (Long Term Evolution), frequency hopping is used to obtain frequency diversity.

For example, as described in Non-Patent Document 1, PUSCH (Physical Uplink Shared Channel) frequency hopping is performed as uplink frequency hopping. PUSCH frequency hopping is frequency hopping within a subframe (Intra-subframe). That is, the frequency resource used by the UE (User Equipment) in the second slot in the subframe is different from the frequency resource used by the UE in the first slot in the subframe. Further, there are Type-1 hopping and Type-2 hopping as PUSCH frequency hopping. In Type-1 hopping, for example, the frequency offset between the frequency resource used in the first slot and the frequency resource used in the second slot is 1/4 of the frequency domain of PUSCH, -1 / 4 or 1/2. That is, in Type-1 hopping, there are three frequency hopping patterns.

However, the eNB (evolved Node B) does not know which frequency hopping pattern (for example, the PUSCH frequency hopping pattern of Non-Patent Document 1) is used for the UE by another eNB (for example, a neighboring eNB). Thus, for example, the radio resource and frequency hopping pattern assigned to the first UE by the first eNB may be the same as the radio resource and frequency hopping pattern assigned to the second UE by the second eNB. In such a case, even if frequency hopping is performed, the interference from the second UE in the first eNB may continue over the entire period of the assigned radio resource. In particular, when SPS (Semi-Persistent Scheduling) is applied, the interference can continue for a long period of time. As a result, communication quality in a radio access network (RAN) may be deteriorated.

An object of the present invention is to provide a base station, a terminal device, and a method that can improve communication in a radio access network.

A first base station according to an aspect of the present invention transmits an hopping pattern control information related to a frequency hopping pattern for a terminal device, and transmits the hopping pattern control information to the second base station. A first communication processing unit.

A second base station according to an aspect of the present invention includes a first communication processing unit that receives hopping pattern control information related to a frequency hopping pattern for a terminal device from the first base station, and the hopping pattern control information. And a second communication processing unit that communicates with the terminal device.

A terminal apparatus according to an aspect of the present invention includes a communication processing unit that communicates with a first base station or a second base station according to a frequency hopping pattern for the terminal apparatus, and the first base station Is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.

The method in the 1st base station which concerns on 1 aspect of this invention acquires the hopping pattern control information regarding the pattern of the frequency hopping for a terminal device, and transmits the said hopping pattern control information to a 2nd base station. Including.

A program according to an aspect of the present invention acquires hopping pattern control information related to a frequency hopping pattern for a terminal device in a first base station, and transmits the hopping pattern control information to a second base station. And causing the processor to execute.

The computer-readable non-transitory recording medium according to an aspect of the present invention is the first base station, wherein the first base station acquires hopping pattern control information related to a frequency hopping pattern for a terminal device, and the hopping pattern control A program for causing the processor to execute transmission of information to the second base station is recorded.

The method in the 2nd base station which concerns on 1 aspect of this invention receives the hopping pattern control information regarding the pattern of the frequency hopping for a terminal device from a 1st base station, and is based on the said hopping pattern control information Communicating with the terminal device.

A program according to an aspect of the present invention is based on receiving, from the first base station, hopping pattern control information related to a frequency hopping pattern for a terminal device in the second base station, and the hopping pattern control information. To communicate with the terminal device.

The non-transitory computer-readable recording medium according to one aspect of the present invention is configured to receive, from the first base station, hopping pattern control information related to a frequency hopping pattern for the terminal device at the second base station. And a program for causing the processor to execute communication with the terminal device based on the hopping pattern control information.

A method in a terminal apparatus according to an aspect of the present invention includes communicating with a first base station or a second base station according to a frequency hopping pattern for the terminal apparatus, wherein the first base station Is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.

A program according to an aspect of the present invention causes a processor to execute communication with a first base station or a second base station according to a frequency hopping pattern for the terminal device in the terminal device, One base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.

A non-transitory computer-readable recording medium according to an aspect of the present invention communicates with a first base station or a second base station in a terminal device according to a frequency hopping pattern for the terminal device. The first base station is a base station that transmits hopping pattern control information regarding the pattern of the frequency hopping to the second base station.

According to the present invention, it is possible to improve communication in a radio access network. In addition, according to this invention, another effect may be show | played instead of the said effect or with the said effect.

It is explanatory drawing which shows an example of the schematic structure of the system which concerns on 1st Embodiment. It is explanatory drawing for demonstrating the example of allocation of the uplink radio | wireless resource (PUSCH resource) to the terminal device by a base station. It is explanatory drawing for demonstrating the example of the interference of an uplink. It is a block diagram which shows the example of a schematic structure of the 1st base station which concerns on 1st Embodiment. It is a block diagram which shows the example of a schematic structure of the 2nd base station which concerns on 1st Embodiment. It is a block diagram which shows the example of a schematic structure of the 3rd base station which concerns on 1st Embodiment. It is a block diagram which shows the example of a schematic structure of the terminal device which concerns on 1st Embodiment. It is explanatory drawing for demonstrating the example of the measurement of the frequency hopping pattern and received power in 1st Embodiment. It is explanatory drawing for demonstrating the example of the measurement of the frequency hopping pattern and interference in 1st Embodiment. It is a sequence diagram for demonstrating the example of the schematic flow of the process which concerns on 1st Embodiment. It is explanatory drawing which shows an example of the schematic structure of the system which concerns on 2nd Embodiment. It is a block diagram which shows the example of a schematic structure of the 1st base station which concerns on 2nd Embodiment. It is a block diagram which shows the example of a schematic structure of the 2nd base station which concerns on 2nd Embodiment. It is a block diagram which shows the example of a schematic structure of the terminal device which concerns on 2nd Embodiment. It is explanatory drawing which shows an example of the schematic structure of the system which concerns on 3rd Embodiment. It is a block diagram which shows the example of a schematic structure of the 1st unit which concerns on 3rd Embodiment. It is a block diagram which shows the example of a schematic structure of the 2nd unit which concerns on 3rd Embodiment. It is a block diagram which shows the example of a schematic structure of the terminal device which concerns on 3rd Embodiment. It is explanatory drawing for demonstrating the example of the measurement of the frequency hopping pattern and received power in 3rd Embodiment. It is explanatory drawing for demonstrating the example of the measurement of the frequency hopping pattern and interference in 3rd Embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and drawings, elements that can be similarly described are denoted by the same reference numerals, and redundant description may be omitted.

The description will be made in the following order.
1. 1. First embodiment 1.1. System configuration 1.2. Configuration of each node 1.2.1. Configuration of base station 100 1.2.2. Configuration of base station 200 1.2.3. Configuration of base station 300 1.2.4. Configuration of terminal device 400 1.3. Technical features 1.4. Modification 2 Second Embodiment 2.1. System configuration 2.2. Configuration of each node 2.2.1. Configuration of base station 600 2.2.2. Configuration of base station 700 2.2.3. Configuration of terminal device 800 2.3. Technical features Third Embodiment 3.1. System configuration 3.2. Configuration of each node 3.2.1. Configuration of first unit 1100 3.2.2. Configuration of second unit 1200 3.2.3. Configuration of terminal device 1300 3.3. Technical features

<<<< 1. First embodiment >>
The first embodiment will be described with reference to FIGS.

<< 1.1. System configuration >>
An example of the configuration of the system 1 according to the first embodiment will be described with reference to FIGS.

FIG. 1 is an explanatory diagram illustrating an example of a schematic configuration of a system 1 according to the first embodiment. Referring to FIG. 1, the system 1 includes a base station 100, a base station 200, a base station 300, and a terminal device 400. Although FIG. 1 shows three terminal devices 400 (that is, a terminal device 400A, a terminal device 400B, and a terminal device 400C), the system 1 may include four or more terminal devices 400. Only one or two terminal devices 400 may be included.

For example, the system 1 is a system compliant with 3GPP (Third Generation Partnership Project) standard / specification. More specifically, for example, the system 1 may be a system that complies with LTE / LTE-Advanced standards / specifications. Alternatively, the system 1 may be a system that conforms to the standard / specification of the fifth generation (5G) / NR (New Radio). Of course, the system 1 is not limited to these examples.

(1) Base station 100, base station 200, base station 300
The base station 100 is a node of a radio access network (RAN), and performs radio communication with a terminal device (for example, the terminal device 400) located in the coverage area.

For example, the base station 100 may be an eNB (evolved Node B) or a gNB in 5G NR. The base station 100 may include a plurality of units (or a plurality of nodes). The plurality of units (or nodes) include a first unit (or first node) that performs processing of an upper protocol layer and a second unit (or second node) that performs processing of a lower protocol layer. May be included. For example, the first unit may be referred to as a central unit (CU), and the second unit may be a distributed unit (DU) or an access unit (AU). May be called. As another example, the first unit may be called a digital unit (DU), and the second unit may be a radio unit (RU) or a remote unit (RU). May be called. The DU (Digital Unit) may be a BBU (Base Band Unit), and the RU may be an RRH (Remote Radio Head) or an RRU (Remote Radio Unit). Of course, the names of the first unit (or first node) and the second unit (or second node) are not limited to this example. Alternatively, the base station 100 may be a single unit (or a single node). In this case, the base station 100 may be one of the plurality of units (for example, one of the first unit and the second unit), and the other unit ( For example, it may be connected to the other of the first unit and the second unit.

The description of the base station 200 and the base station 300 is the same as the description of the base station 100. Therefore, the overlapping description is omitted here.

Each of base station 200 and base station 300 may be the same type of base station as base station 100 or may be a different type of base station from base station 100. For example, the base station 100 may be an eNB and the base station 200 (or the base station 300) may be an eNB, or the base station 100 may be a gNB and the base station 200 (or the base station 300) may be a gNB. May be. Alternatively, base station 100 may be one of eNB and gNB, and base station 200 (or base station 300) may be the other of eNB and gNB. Of course, the base station 300 may be the same type of base station as the base station 200, or may be a different type of base station from the base station 200.

Each of the base station 100, the base station 200, and the base station 300 may be the second unit, or may be connected to the same first unit.

(2) Terminal device 400
The terminal device 400 communicates (by radio) with the base station. For example, when the terminal device 400 is located within the coverage area of the base station, the terminal device 400 communicates with the base station.

For example, as illustrated in FIG. 1, the terminal device 400A is connected to the base station 100 and communicates with the base station 100, and the terminal device 400B is connected to the base station 200 and communicates with the base station 200. 400C is connected to base station 300 and communicates with base station 300.

For example, the terminal device 400 is a UE.

(3) Interference For example, the base station 100, the base station 200, and the base station 300 can allocate the same radio resource (same time frequency resource) to the terminal device 400A, the terminal device 400B, and the terminal device 400C, respectively. In this case, interference may occur.

FIG. 2 is an explanatory diagram for explaining an example of assignment of uplink radio resources (PUSCH resources) to terminal devices by a base station. Referring to FIG. 2, the time frequency resources in the subframe 11 are shown. The subframe 11 includes a first slot 13 and a second slot 15. Furthermore, there are subbands 21, 23, 25, and 27 in the frequency direction. For example, the base station 100, the base station 200, and the base station 300 allocate the radio resource 31 to the terminal device 400A, the terminal device 400B, and the terminal device 400C, respectively. The radio resource 31 is located over a part of the subband 21 in the frequency direction and over the subband 21 in the time direction.

FIG. 3 is an explanatory diagram for explaining an example of uplink interference. Referring to FIG. 3, terminal apparatus 400A transmits signal 41 to base station 100, terminal apparatus 400B transmits signal 43 to base station 200, and terminal apparatus 400C transmits signal 45 to base station 200. . These

signals

41, 43, and 45 are desired signals in the base station 100, the base station 200, and the base station 300, respectively. On the other hand, for example, the terminal device 400B is located near the boundary between the coverage of the base station 200 and the coverage of the base station 100, so that the signal 47 (the same signal as the signal 43) from the terminal device 400B is Reach 100. This signal 47 can be an interference signal in the base station 100. Further, for example, the terminal device 400C is located in the vicinity of the boundary between the coverage of the base station 300 and the coverage of the base station 100. Therefore, the signal 49 (the same signal as the signal 45) from the terminal device 400C is Reach 100. This signal 49 can be an interference signal in the base station 100.

In particular, when SPS is applied to the terminal device 400A, the terminal device 400B, and the terminal device 400C, the interference may continue for a long period.

In the first embodiment, for example, the terminal device 400A, the terminal device 400B, and the terminal device 400C use frequency hopping. If the frequency hopping pattern of the terminal device 400A is the same as the frequency hopping pattern of the terminal device 400B and the terminal device 400C, the interference in the base station 100 is not reduced. On the other hand, if the frequency hopping pattern of the terminal device 400A is different from the frequency hopping patterns of the terminal device 400B and the terminal device 400C, interference in the base station 100 can be reduced.

<< 1.2. Configuration of each node >>
The configuration of each node according to the first embodiment will be described with reference to FIGS.

<1.2.1. Configuration of Base Station 100>
FIG. 4 is a block diagram illustrating an example of a schematic configuration of the base station 100 according to the first embodiment. Referring to FIG. 4, the base station 100 includes a network communication unit 110, a wireless communication unit 120, a storage unit 130, and a processing unit 140.

(1) Network communication unit 110
The network communication unit 110 receives a signal from the network and transmits the signal to the network.

(2) Wireless communication unit 120
The wireless communication unit 120 transmits and receives signals wirelessly. For example, the wireless communication unit 120 receives a signal from the terminal device and transmits a signal to the terminal device.

(3) Storage unit 130
The storage unit 130 temporarily or permanently stores programs (commands) and parameters for the operation of the base station 100 and various data. The program includes one or more instructions for the operation of the base station 100.

(4) Processing unit 140
The processing unit 140 provides various functions of the base station 100. The processing unit 140 includes a first communication processing unit 141, a second communication processing unit 143, and an information acquisition unit 145. The processing unit 140 may further include other components other than these components. That is, the processing unit 140 can perform operations other than the operations of these components. Specific operations of the first communication processing unit 141, the second communication processing unit 143, and the information acquisition unit 145 will be described in detail later.

For example, the processing unit 140 (first communication processing unit 141) communicates with another network node (for example, the base station 200 or the base station 300) via the network communication unit 110. For example, the processing unit 140 (second communication processing unit 143) communicates with a terminal device (for example, the terminal device 400A) via the wireless communication unit 120.

(5) Implementation Example The network communication unit 110 may be implemented by a network adapter and / or a network interface card. The wireless communication unit 120 may be implemented by an antenna and a radio frequency (RF) circuit, and the antenna may be a directional antenna. The storage unit 130 may be implemented by a memory (for example, a nonvolatile memory and / or a volatile memory) and / or a hard disk. The processing unit 140 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The first communication processing unit 141, the second communication processing unit 143, and the information acquisition unit 145 may be implemented by the same processor, or may be separately implemented by different processors. The memory (storage unit 130) may be included in the one or more processors, or may be outside the one or more processors.

The base station 100 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may execute the program to perform the operation of the processing unit 140 (the operation of the first communication processing unit 141, the second communication processing unit 143, and / or the information acquisition unit 145). The program may be a program for causing the processor to execute the operation of the processing unit 140 (the operation of the first communication processing unit 141, the second communication processing unit 143, and / or the information acquisition unit 145).

Note that the base station 100 may be virtualized. That is, the base station 100 may be implemented as a virtual machine. In this case, the base station 100 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor and a memory and a hypervisor.

<1.2.2. Configuration of Base Station 200>
FIG. 5 is a block diagram illustrating an example of a schematic configuration of the base station 200 according to the first embodiment. Referring to FIG. 5, the base station 200 includes a network communication unit 210, a wireless communication unit 220, a storage unit 230, and a processing unit 240.

(1) Network communication unit 210
The network communication unit 210 receives a signal from the network and transmits the signal to the network.

(2) Wireless communication unit 220
The wireless communication unit 220 transmits and receives signals wirelessly. For example, the wireless communication unit 220 receives a signal from the terminal device and transmits a signal to the terminal device.

(3) Storage unit 230
The storage unit 230 temporarily or permanently stores programs (commands) and parameters for the operation of the base station 200 and various data. The program includes one or more instructions for operation of the base station 200.

(4) Processing unit 240
The processing unit 240 provides various functions of the base station 200. The processing unit 240 includes a first communication processing unit 241, a second communication processing unit 243, and an information acquisition unit 245. Note that the processing unit 240 may further include other components other than these components. That is, the processing unit 240 can perform operations other than the operations of these components. Specific operations of the first communication processing unit 241, the second communication processing unit 243, and the information acquisition unit 245 will be described in detail later.

For example, the processing unit 240 (first communication processing unit 241) communicates with another network node (for example, the base station 100 or the base station 300) via the network communication unit 210. For example, the processing unit 240 (second communication processing unit 243) communicates with a terminal device (for example, the terminal device 400B) via the wireless communication unit 220.

(5) Implementation Example The network communication unit 210 may be implemented by a network adapter and / or a network interface card. The wireless communication unit 220 may be implemented by an antenna and a radio frequency (RF) circuit, and the antenna may be a directional antenna. The storage unit 230 may be implemented by a memory (for example, a nonvolatile memory and / or a volatile memory) and / or a hard disk. The processing unit 240 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The first communication processing unit 241, the second communication processing unit 243, and the information acquisition unit 245 may be implemented by the same processor, or may be separately implemented by different processors. The memory (storage unit 230) may be included in the one or more processors, or may be outside the one or more processors.

The base station 200 may include a memory that stores a program (command) and one or more processors that can execute the program (command). The one or more processors may execute the program to perform the operation of the processing unit 240 (the operation of the first communication processing unit 241, the second communication processing unit 243, and / or the information acquisition unit 245). The program may be a program for causing a processor to execute the operation of the processing unit 240 (the operation of the first communication processing unit 241, the second communication processing unit 243, and / or the information acquisition unit 245).

Note that the base station 200 may be virtualized. That is, the base station 200 may be implemented as a virtual machine. In this case, the base station 200 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor and a memory and a hypervisor.

<1.2.3. Configuration of Base Station 300>
FIG. 6 is a block diagram illustrating an example of a schematic configuration of the base station 300 according to the first embodiment. Referring to FIG. 6, the base station 300 includes a network communication unit 310, a wireless communication unit 320, a storage unit 330, and a processing unit 340.

(1) Network communication unit 310
The network communication unit 310 receives a signal from the network and transmits the signal to the network.

(2) Wireless communication unit 320
The wireless communication unit 320 transmits and receives signals wirelessly. For example, the wireless communication unit 320 receives a signal from the terminal device and transmits a signal to the terminal device.

(3) Storage unit 330
The storage unit 330 temporarily or permanently stores programs (commands) and parameters for the operation of the base station 300 and various data. The program includes one or more instructions for operation of the base station 300.

(4) Processing unit 340
The processing unit 340 provides various functions of the base station 300. The processing unit 340 includes a first communication processing unit 341, a second communication processing unit 343, and an information acquisition unit 345. Note that the processing unit 340 may further include other components other than these components. That is, the processing unit 340 can perform operations other than the operations of these components. Specific operations of the first communication processing unit 341, the second communication processing unit 343, and the information acquisition unit 345 will be described in detail later.

For example, the processing unit 340 (first communication processing unit 341) communicates with other network nodes (for example, the base station 100 or the base station 200) via the network communication unit 310. For example, the processing unit 340 (second communication processing unit 343) communicates with a terminal device (for example, the terminal device 400C) via the wireless communication unit 320.

(5) Implementation Example The network communication unit 310 may be implemented by a network adapter and / or a network interface card. The wireless communication unit 320 may be implemented by an antenna and a radio frequency (RF) circuit, and the antenna may be a directional antenna. The storage unit 330 may be implemented by a memory (for example, a nonvolatile memory and / or a volatile memory) and / or a hard disk. The processing unit 340 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The first communication processing unit 341, the second communication processing unit 343, and the information acquisition unit 345 may be implemented by the same processor, or may be separately implemented by different processors. The memory (storage unit 330) may be included in the one or more processors, or may be outside the one or more processors.

The base station 300 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may execute the above-described program to perform the operation of the processing unit 340 (the operation of the first communication processing unit 341, the second communication processing unit 343, and / or the information acquisition unit 345). The program may be a program for causing the processor to execute the operation of the processing unit 340 (the operation of the first communication processing unit 341, the second communication processing unit 343, and / or the information acquisition unit 345).

Note that the base station 300 may be virtualized. That is, the base station 300 may be implemented as a virtual machine. In this case, the base station 300 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor and a memory and a hypervisor.

<1.2.4. Configuration of Terminal Device 400>
FIG. 7 is a block diagram illustrating an example of a schematic configuration of the terminal device 400 according to the first embodiment. Referring to FIG. 7, the terminal device 400 includes a wireless communication unit 410, a storage unit 420, and a processing unit 430.

(1) Wireless communication unit 410
The wireless communication unit 410 transmits and receives signals wirelessly. For example, the wireless communication unit 410 receives a signal from the base station and transmits a signal to the base station.

(2) Storage unit 420
The storage unit 420 temporarily or permanently stores programs (commands) and parameters for operation of the terminal device 400 and various data. The program includes one or more instructions for the operation of the terminal device 400.

(3) Processing unit 430
The processing unit 430 provides various functions of the terminal device 400. The processing unit 430 includes a communication processing unit 431. Note that the processing unit 430 may further include other components than this component. In other words, the processing unit 430 can perform operations other than the operation of this component. Specific operations of the communication processing unit 431 will be described in detail later.

For example, the processing unit 430 (communication processing unit 431) communicates with the base station via the wireless communication unit 410.

(4) Implementation Example The wireless communication unit 410 may be implemented by an antenna, a high frequency (RF) circuit, or the like. The storage unit 420 may be implemented by a memory (for example, a nonvolatile memory and / or a volatile memory) and / or a hard disk. The processing unit 430 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The memory (storage unit 420) may be included in the one or more processors, or may be outside the one or more processors. As an example, the processing unit 430 may be implemented in a SoC (System on Chip).

The terminal device 400 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may perform the operation of the processing unit 430 (operation of the communication processing unit 431) by executing the program. The program may be a program for causing the processor to execute the operation of the processing unit 430 (the operation of the communication processing unit 431).

<< 1.3. Technical features >>
The technical features of the first embodiment will be described with reference to FIGS.

(1) Transmission of hopping pattern control information The base station 100 (information acquisition unit 145) acquires hopping pattern control information related to a frequency hopping pattern for a terminal device. The base station 100 (first communication processing unit 141) transmits the hopping pattern control information to the base station 200 and the base station 300.

-Terminal device For example, the terminal device is a terminal device to which SPS is applied.

For example, the terminal device is a terminal device 400A that communicates with the base station 100. That is, the base station 100 transmits hopping pattern control information related to the frequency hopping pattern for the terminal device 400A communicating with the base station 100 itself to the base station 200 and the base station 300.

-Frequency hopping For example, the frequency hopping is uplink frequency hopping. Specifically, for example, the frequency hopping is PUSCH frequency hopping. As an example, the frequency hopping is Type-1 hopping.

For example, the frequency hopping is frequency hopping within a subframe. Specifically, in the frequency hopping, the frequency resource used in the second slot in the subframe used by the terminal apparatus is used in the first slot in the subframe by the terminal apparatus. Different from frequency resource.

-Hopping pattern control information For example, the hopping pattern control information indicates the frequency hopping pattern for the terminal device. More specifically, for example, the hopping pattern control information includes, as the pattern of the frequency hopping for the terminal device (for example, the terminal device 400A communicating with the base station 100), a plurality of frequency hopping patterns. One is shown. As an example, when the frequency hopping is PUSCH Type-1 hopping, the hopping pattern control information indicates one of three frequency hopping patterns.

When frequency hopping is not performed for the terminal device (for example, the terminal device 400A communicating with the base station 100), the hopping pattern control information is used as the pattern of the frequency hopping for the terminal device. It may indicate no frequency hopping.

The hopping pattern control information is not information indicating the frequency hopping pattern itself for the terminal device, but other information (auxiliary information) for specifying the frequency hopping for the terminal device. It may be.

-Other information For example, the base station 100 transmits not only the hopping pattern control information but also other information to the base station 200 and the base station 300.

For example, the base station 100 (information acquisition unit 145) acquires the hopping pattern control information and subframe information indicating a subframe in which the frequency hopping pattern is used. The base station 100 (first communication processing unit 141) transmits the hopping pattern control information and the subframe information to the base station 200 and the base station 300.

-Message For example, the base station 100 (first communication processing unit 141) transmits a message including the hopping pattern control information (and the subframe information) to the base station 200 and the base station 300.

For example, the message is an X2 message. Alternatively, the message may be an Xn message.

-Transmission by other base station Not only the base station 100 but also the base station 200 and the base station 300 can transmit the hopping pattern control information.

For example, the base station 200 (the information acquisition unit 245, the first communication processing unit 241) performs hopping pattern control information (hereinafter, “second hopping pattern” regarding the frequency hopping pattern for the terminal device 400B communicating with the base station 200. Control information ”) and the second hopping pattern control information may be transmitted to the base station 100 (and the base station 300). The base station 100 (first communication processing unit 141) can receive the second hopping pattern control information from the base station 200. For example, the terminal device 400B is a terminal device to which SPS is applied.

For example, the base station 300 (the information acquisition unit 345, the first communication processing unit 341) performs hopping pattern control information (hereinafter, “third hopping pattern” regarding the frequency hopping pattern for the terminal device 400C communicating with the base station 300. Control information ”) and the third hopping pattern control information may be transmitted to the base station 100 (and the base station 200). The base station 100 (first communication processing unit 141) can receive the third hopping pattern control information from the base station 300. For example, the terminal device 400C is a terminal device to which SPS is applied.

By such transmission of hopping pattern control information between base stations, for example, the frequency hopping pattern used (for a terminal device to which SPS is applied) can be made different between base stations. . As a result, interference can be reduced and communication can be improved in the radio access network.

(2) Selection of Frequency Hopping Pattern As described above, the base station 100 transmits hopping pattern control information related to the frequency hopping pattern for the terminal device 400A communicating with the base station 100 to the base station 200 and the base station 300. .

For example, the base station 100 (second communication processing unit 143) selects the pattern of the frequency hopping for the terminal device 400A.

For example, when the base station 100 has received the second hopping pattern control information from the base station 200, the base station 100 (second communication processing unit 143) is based on the second hopping pattern control information. Then, the pattern of the frequency hopping for the terminal device 400A is selected. For example, when the base station 100 receives the third hopping pattern control information from the base station 300, the base station 100 (second communication processing unit 143) is based on the third hopping pattern control information. Then, the pattern of the frequency hopping for the terminal device 400A is selected.

Specifically, for example, the base station 100 (second communication processing unit 143) uses a frequency hopping pattern different from the frequency hopping pattern indicated by the second hopping pattern control information and the third hopping pattern control information. The frequency hopping pattern for the terminal device 400A is selected. That is, the base station 100 (second communication processing unit 143) selects a frequency hopping pattern different from the frequency hopping pattern for the terminal device 400B and the terminal device 400C as the frequency hopping pattern for the terminal device 400A.

By selecting such a frequency hopping pattern, for example, the frequency hopping pattern used (for a terminal device to which SPS is applied) can be made different between base stations. As a result, interference can be reduced and communication can be improved in the radio access network.

In addition, since the number of frequency hopping patterns is limited, it may be difficult to make the frequency hopping patterns (used for terminal apparatuses to which SPS is applied) completely different between base stations. Therefore, the same frequency hopping pattern may be used between base stations (for terminal devices to which SPS is applied). It is desirable to use different frequency hopping patterns between base stations whenever possible.

Not only the base station 100 but also the base station 200 and the base station 300 can similarly select the frequency hopping pattern of the terminal device 400B and the frequency hopping pattern of the terminal device 400C, respectively.

(3) Communication using frequency hopping pattern For example, the base station 100 (second communication processing unit 143) communicates with the terminal device 400A according to the pattern of the frequency hopping for the terminal device 400A. Also, the terminal device 400A (communication processing unit 431) communicates with the base station 100 according to the above-described pattern of the frequency hopping for the terminal device 400A.

For example, the base station 100 (second communication processing unit 143) transmits control information related to the pattern of the frequency hopping for the terminal device 400A to the terminal device 400A, and the terminal device 400A (communication processing unit 431) Receive control information. The terminal device 400A (communication processing unit 431) transmits an uplink signal to the base station 100 according to the pattern of the frequency hopping indicated by the control information. The base station 100 (second communication processing unit 143) receives the uplink signal from the terminal device 400A according to the pattern of the frequency hopping.

For example, the control information is DCI (Downlink Control Information), and the base station 100 (second communication processing unit 143) transmits the control information by PDCCH (Physical Downlink Control Channel). Alternatively, the control information may be an RRC (Radio Resource Control) message.

(4) Measurement For example, the base station 100 (second communication processing unit 143) performs measurement on a radio resource for SPS of the terminal device 400A.

(4-1) First Example: Measurement of Received Power from Terminal Device As a first example, the measurement is a measurement of received power from the terminal device 400A in the radio resource.

For example, when the frequency hopping pattern for the terminal device 400A is different from the frequency hopping pattern indicated by the second hopping pattern control information and the third hopping pattern control information, the long-term attributed to SPS It is assumed that general interference will not be so great. Therefore, for example, in such a case, the base station 100 (second communication processing unit 143) measures the received power from the terminal device 400A in the radio resource for SPS of the terminal device 400A.

For example, the radio resource (where the measurement is performed) is a radio resource allocated for the SPS of the terminal device 400A.

Specific Example of Measurement FIG. 8 is an explanatory diagram for explaining an example of measurement of the frequency hopping pattern and the received power in the first embodiment. Referring to FIG. 8, the

radio resources

33 and 35 allocated to the terminal device 400A by the base station 100, the

radio resources

33 and 37 allocated to the terminal device 400B by the base station 200, and the terminal device by the base station 300

Radio resources

33, 39 assigned to 400C are shown. The terminal device 400A transmits an uplink signal using the radio resource 33 and the radio resource 35 having the same frequency resource without performing frequency hopping. The terminal device 400B performs frequency hopping in which the frequency offset is 1/4 of the frequency domain of PUSCH, and transmits the uplink signal using the radio resource 33 and the radio resource 37. The terminal device 400C performs frequency hopping in which the frequency offset is -1/4 of the frequency domain of the PUSCH, and transmits an uplink signal using the radio resource 33 and the radio resource 39. For example, the base station 100 (second communication processing unit 143) measures received power from the terminal device 400A in the radio resource 35 that is not used by the terminal device 400B and the terminal device 400C but is used by the terminal device 400A. .

-Operation based on measurement result For example, the base station 100 (second communication processing unit 143) changes the transmission power or modulation and coding scheme (Modulation and Coding Scheme: MCS) of the terminal device 400A based on the measurement result. Decide what to do.

Thereby, for example, the terminal device 400A can use a more appropriate transmission power or modulation and coding scheme.

(4-2) Second Example: Measurement of Interference As a second example, the measurement may be measurement of interference from one or more other terminal devices in the radio resource.

For example, when the pattern of the frequency hopping for the terminal device 400A is the same as the frequency hopping pattern indicated by the second hopping pattern control information or the third hopping pattern control information, it is caused by SPS. It is assumed that long-term interference may occur. Therefore, for example, in such a case, the base station 100 (second communication processing unit 143) may use one or more other terminal devices (the terminal device 400B and / or the terminal device) in the radio resource for the SPS of the terminal device 400A. 400C) may be measured.

(The above measurement is performed) The radio resource may be a radio resource allocated for the SPS of the terminal device 400A. Alternatively, the radio resource (where the measurement is performed) may be a radio resource to be allocated for the SPS of the terminal device 400A.

The frequency hopping pattern for the one or more other terminal devices (for example, the terminal device 400B and / or the terminal device 400C) may be different from the frequency hopping pattern for the terminal device 400A.

Specific Example of Measurement FIG. 9 is an explanatory diagram for explaining an example of measurement of the frequency hopping pattern and interference in the first embodiment. Referring to FIG. 9,

radio resources

33 and 35 allocated to the terminal device 400A by the base station 100 (or

radio resources

33 and 35 to be allocated to the terminal device 400A by the base station 100) are shown. In addition,

radio resources

33 and 37 allocated to the terminal device 400B by the base station 200 and

radio resources

33 and 35 allocated to the terminal device 400C by the base station 300 are shown. The terminal device 400A does not transmit an uplink signal using the radio resource 33 and the radio resource 35. The terminal device 400B performs frequency hopping in which the frequency offset is 1/4 of the frequency domain of PUSCH, and transmits the uplink signal using the radio resource 33 and the radio resource 37. The terminal device 400C transmits an uplink signal using the radio resource 33 and the radio resource 35 having the same frequency resource without performing frequency hopping. First, the base station 100 (second communication processing unit 143) measures the interference (the sum of interference (reception power) from the terminal device 400B and interference (reception power) from the terminal device 400C) in the radio resource 33 ( Hereinafter, referred to as “first measurement”). Next, the base station 100 (second communication processing unit 143) performs measurement (hereinafter referred to as “second measurement”) of interference (interference (received power) from the terminal device 400C) in the radio resource 35. Then, the base station 100 (second communication processing unit 143) calculates the interference from the terminal device 400B by subtracting the result of the second measurement from the result of the first measurement. Thus, interference from each of the terminal device 400B and the terminal device 400C in the base station 100 is calculated.

—Operation Based on Measurement Result The base station 100 (second communication processing unit 143) may determine whether to continue the SPS of the terminal device 400A based on the measurement result.

When the interference is small, the base station 100 (second communication processing unit 143) may determine to continue the SPS of the terminal device 400A.

When the interference is large, the base station 100 (second communication processing unit 143) may decide to end the SPS of the terminal device 400A (that is, switch to dynamic scheduling). Or when interference is large, the base station 100 (2nd communication process part 143) changes the radio | wireless resource for SPS of the terminal device 400A, or changes the frequency hopping pattern for the terminal device 400A. You may decide to do.

Thereby, for example, the terminal device 400A can perform more desirable communication.

(5) Process Flow FIG. 10 is a sequence diagram for explaining an example of a schematic process flow according to the first embodiment.

The base station 100 selects a frequency hopping pattern for the terminal device 400A communicating with the base station 100 (S501).

The base station 100 transmits hopping pattern control information related to the frequency hopping pattern and subframe information indicating a subframe in which the frequency hopping pattern is used to the base station 200 and the base station 300 (S503). , S505).

The base station 100, the base station 200, and the base station 300 perform scheduling for the subframe (S507, S509, S511).

The base station 100 performs measurement in the radio resource for SPS of the terminal device 400A (measurement of received power from the terminal device 400A or measurement of interference from other terminal devices) (S513).

The base station 100 determines an operation based on the measurement result (S515). For example, the base station 100 may determine whether to change the transmission power or the MCS of the terminal device 400A based on the result of the measurement (measurement of the received power from the terminal device 400A). Or base station 100 may determine whether to continue SPS of terminal unit 400A based on the result of the above-mentioned measurement (measurement of interference from other terminal units).

<< 1.4. Modification >>
A modification of the first embodiment will be described.

(1) First Modification As described above, for example, the base station 100 (first communication processing unit 141) transmits a message including the hopping pattern control information (and the subframe information) to the base station 200 and the base station. To 300.

As a first modification, each of base station 200 (first communication processing unit 241) and base station 300 (first communication processing unit 341) may transmit a response message to the message to base station 100. . The base station 100 (first communication processing unit 141) may receive the response message from each of the base station 200 and the base station 300.

For example, the response message may indicate acceptance or rejection of the hopping pattern control information. For example, when the pattern indicated by the hopping pattern control information is not used for the terminal device 400B communicating with the base station 200, the base station 200 sends a response message indicating acceptance of the hopping pattern control information. May be transmitted to the base station 100. For example, when the pattern indicated by the hopping pattern control information is used for the terminal device 400B communicating with the base station 200, the base station 200 sends a response message indicating rejection of the hopping pattern control information. May be transmitted to the base station 100.

Thereby, for example, the base station 200 and the base station 300 can control the use of the hopping pattern by the terminal device 400A communicating with the base station 100. As a result, interference in the radio access network can be reduced.

(2) Second Modification As described above, for example, the base station 100 (second communication processing unit 143) selects the frequency hopping pattern for the terminal device 400A and then measures the interference. Also good.

As a second modification, the base station 100 (second communication processing unit 143) may perform measurement of interference in radio resources before selecting a frequency hopping pattern for the terminal device 400A. Then, the base station 100 (second communication processing unit 143) may select a frequency hopping pattern for the terminal device 400A based on the measurement result. The base station 100 (second communication processing unit 143) may select a radio resource to be allocated for the SPS of the terminal device 400A based on the measurement result.

Thereby, for example, a more appropriate frequency hopping pattern and / or radio resource can be used for the terminal device 400A.

(3) Third Modification As described above, for example, the frequency hopping for the terminal device (for example, the terminal device 400A communicating with the base station 100) is frequency hopping in a subframe.

As a third modification, the frequency hopping for the terminal device may be inter-subframe frequency hopping. Specifically, in the frequency hopping, the frequency resource used in the first subframe used by the terminal device may be different from the frequency resource used in the second subframe by the terminal device. .

(4) Fourth Modification As described above, for example, the frequency hopping for the terminal device (for example, the terminal device 400A communicating with the base station 100) is uplink frequency hopping.

As a fourth modification, the frequency hopping for the terminal device may be downlink frequency hopping. In this case, the terminal device may be a terminal device using NB-IoT (Narrow Band Internet of Things).

(5) Fifth Modification As described above, the base station 100 (first communication processing unit 141) transmits hopping pattern control information regarding a frequency hopping pattern for the terminal device to the base station 200. Further, as described above, for example, the terminal device is the terminal device 400 </ b> A that communicates with the base station 100.

As a fifth modification, the terminal device may be a terminal device 400B that communicates with the base station 200. That is, the base station 100 (information acquisition unit 145) selects a frequency hopping pattern for the terminal device 400B communicating with the base station 200, and transmits hopping pattern control information related to the frequency hopping pattern to the base station 200. May be. Thus, the base station 100 may instruct the base station 200 of a frequency hopping pattern for the terminal device 400B. As an example, the base station 100 may be a node that performs overall control, and the base station 200 (and the base station 300) may be a node that operates according to the control.

In the fifth modification, as in the first modification, the base station 200 (first communication processing unit 241) sends a response message to the message (message including the hopping pattern control information) from the base station 100. You may transmit to the base station 100. The response message may indicate acceptance or rejection of the hopping pattern control information.

<<< 2. Second embodiment >>
The second embodiment will be described with reference to FIGS. The first embodiment described above is a specific embodiment, but the second embodiment is a more generalized embodiment.

<< 2.1. System configuration >>
An example of the configuration of the system 2 according to the second embodiment will be described with reference to FIG.

FIG. 11 is an explanatory diagram illustrating an example of a schematic configuration of the system 2 according to the second embodiment. Referring to FIG. 11, the system 2 includes a base station 600, a base station 700, and a terminal device 800. Although only one terminal device 800 is shown in FIG. 11, the system 1 may include two or more terminal devices 800.

For example, the description of the base station 600 is the same as the description of the base station 100 of the first embodiment. For example, the description of the base station 700 is the same as the description of the base station 200 or the base station 300 of the first embodiment. For example, the description about the terminal device 800 is the same as the description about the terminal device 400 of the first embodiment. Therefore, the overlapping description is omitted here.

<< 2.2. Configuration of each node >>
The configuration of each node according to the second embodiment will be described with reference to FIGS.

<2.2.1. Configuration of base station 600>
FIG. 12 is a block diagram illustrating an example of a schematic configuration of a base station 600 according to the second embodiment. Referring to FIG. 12, the base station 600 includes an information acquisition unit 610 and a first communication processing unit 620. Specific operations of the information acquisition unit 610 and the first communication processing unit 620 will be described later.

The information acquisition unit 610 and the first communication processing unit 620 include one or more processors such as a baseband (BB) processor and / or other types of processors, and a memory (eg, a non-volatile memory and / or a volatile memory). And / or a hard disk. The information acquisition unit 610 and the first communication processing unit 620 may be implemented by the same processor, or may be separately implemented by different processors. The memory may be included within the one or more processors, or may be external to the one or more processors.

The base station 600 may include a memory that stores a program (command) and one or more processors that can execute the program (command). The one or more processors may execute the program and perform operations of the information acquisition unit 610 and the first communication processing unit 620. The program may be a program for causing a processor to execute the operations of the information acquisition unit 610 and the first communication processing unit 620.

Note that the base station 600 may be virtualized. That is, the base station 600 may be implemented as a virtual machine. In this case, the base station 600 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor and a memory and a hypervisor.

<2.2.2. Configuration of base station 700>
FIG. 13 is a block diagram illustrating an example of a schematic configuration of a base station 700 according to the second embodiment. Referring to FIG. 13, the base station 700 includes a first communication processing unit 710 and a second communication processing unit 720. Specific operations of the first communication processing unit 710 and the second communication processing unit 720 will be described later.

The first communication processing unit 710 and the second communication processing unit 720 may include one or more processors, such as a baseband (BB) processor and / or other types of processors, and a memory (eg, non-volatile memory and / or volatile). Memory) and / or a hard disk. The first communication processing unit 710 and the second communication processing unit 720 may be implemented by the same processor, or may be separately implemented by different processors. The memory may be included within the one or more processors, or may be external to the one or more processors.

The base station 700 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may execute the program and perform operations of the first communication processing unit 710 and the second communication processing unit 720. The program may be a program for causing the processor to execute the operations of the first communication processing unit 710 and the second communication processing unit 720.

Note that the base station 700 may be virtualized. That is, the base station 700 may be implemented as a virtual machine. In this case, the base station 700 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor and a memory and a hypervisor.

<2.2.3. Configuration of Terminal Device 800>
FIG. 14 is a block diagram illustrating an example of a schematic configuration of a terminal device 800 according to the second embodiment. Referring to FIG. 14, the terminal device 800 includes a communication processing unit 810. The specific operation of the communication processing unit 810 will be described later.

The communication processing unit 810 is implemented by one or more processors such as a baseband (BB) processor and / or other types of processors, a memory (eg, a non-volatile memory and / or a volatile memory), and / or a hard disk. May be. The memory may be included within the one or more processors, or may be external to the one or more processors. As an example, the communication processing unit 810 may be implemented in the SoC.

The terminal device 800 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may execute the above-described program to operate the communication processing unit 810. The program may be a program for causing a processor to execute the operation of the communication processing unit 810.

<< 2.3. Technical features >>
The technical features according to the second embodiment will be described.

-Base station 600
Base station 600 (information acquisition unit 610) acquires hopping pattern control information related to a frequency hopping pattern for terminal apparatus 800. Base station 600 (first communication processing unit 620) transmits the hopping pattern control information to base station 700.

For example, the terminal device 800 is a terminal device to which SPS is applied.

For example, the terminal device 800 is a terminal device that communicates with the base station 600. Alternatively, the terminal device 800 may be a terminal device that communicates with the base station 700.

-Base station 700
The base station 700 (first communication processing unit 710) receives the hopping pattern control information from the base station 600. The base station 700 (second communication processing unit 720) communicates with the terminal device based on the hopping pattern control information.

For example, the terminal device 800 is a terminal device that communicates with the base station 600, and the base station 700 communicates with other terminal devices. In this case, for example, the base station 700 selects another frequency hopping pattern different from the frequency hopping pattern indicated by the hopping pattern control information, and communicates with the other terminal device according to the other frequency hopping pattern. .

Alternatively, the terminal device 800 may be a terminal device that communicates with the base station 700. In this case, for example, the base station 700 may communicate with the terminal device 800 according to the frequency hopping pattern indicated by the hopping pattern control information.

-Terminal device 800
The terminal device 800 (communication processing unit 810) communicates with the base station 600 according to the frequency hopping pattern for the terminal device 800.

Alternatively, the terminal device 800 (communication processing unit 810) may communicate with the base station 700 according to a frequency hopping pattern for the terminal device 800.

-Relationship with the first embodiment As an example, the base station 600, the base station 700, and the terminal device 800 of the second embodiment are the same as the base station 100, the base station 200 (or the base station) of the first embodiment, respectively. 300) and the terminal device 400 (the terminal device 400A or the terminal device 400B). In this case, the description of the first embodiment can be applied to the second embodiment.

Note that the second embodiment is not limited to this example.

The second embodiment has been described above. According to the second embodiment, communication in the radio access network can be improved.

<<< 3. Third Embodiment >>
The third embodiment will be described with reference to FIGS.

<< 3.1. System configuration >>
An example of the configuration of the system 3 according to the third embodiment will be described with reference to FIG.

FIG. 15 is an explanatory diagram illustrating an example of a schematic configuration of the system 3 according to the third embodiment. Referring to FIG. 15, the system 3 includes a base station 1000 and a terminal device 1300. The base station 1000 includes a first unit 1100 and a second unit 1200. FIG. 15 shows three second units 1200 (

second units

1200A, 1200B, and 1200C), but the base station 1000 may include four or more second units 1200. Only two second units 1200 may be included. 15 shows three terminal apparatuses 1300 (that is, terminal apparatus 1300A, terminal apparatus 1300B, and terminal apparatus 1300C), system 3 may include four or more terminal apparatuses 1300. Only one or two terminal devices 1300 may be included.

For example, the system 3 is a system compliant with 3GPP standards / specifications. More specifically, for example, the system 1 may be a system that complies with LTE / LTE-Advanced standards / specifications. Alternatively, the system 1 may be a system compliant with the 5th generation (5G) / NR standard / specification. Of course, the system 1 is not limited to these examples.

(1) Base station 1000
Base station 1000 is a node of a radio access network (RAN), and performs radio communication with a terminal device (for example, terminal device 1300) located in a coverage area.

For example, the first unit 1100 performs processing of the upper layer protocol among the protocols of the radio access network (RAN), and each second unit 1200 performs processing of the lower layer protocol of the protocol.

The base station 1000 may be an eNB. In this case, the first unit 1100 may be referred to as a digital unit (DU), and the second unit 1200 may be referred to as a wireless unit (RU) or a remote unit (RU). The DU may be BBU, and the RU may be RRH or RRU.

Alternatively, the base station 1000 may be a gNB in 5G. In this case, the first unit 1100 may be referred to as a central unit (CU), and the second unit 1200 may be referred to as a distributed unit (DU).

The

second units

1200A, 1200B, and 1200C each have a coverage area and use the same radio resource.

(2) Terminal device 1300
The terminal device 1300 communicates (wirelessly) with the base station. For example, the terminal device 1300 communicates with the base station 1000 when located in the coverage area of the base station 1000. For example, when the terminal device 1300 is located within the coverage area of the second unit 1200, the terminal device 1300 communicates with the base station 1000 via the second unit 1200.

For example, as illustrated in FIG. 15, the terminal device 1300A is connected to the base station 1000 via the second unit 1200A and communicates with the base station 1000. The terminal device 1300B is connected to the base station 1000 via the second unit 1200B and communicates with the base station 1000. The terminal device 1300C is connected to the base station 1000 via the second unit 1200C and communicates with the base station 1000.

For example, the terminal device 1300 is a UE.

(3) Interference For example, the base station 1000 can allocate the same radio resource (same time frequency resource) to the terminal device 1300A, the terminal device 1300B, and the terminal device 1300C. In this case, interference may occur.

Referring to FIG. 2 again, for example, the base station 1000 allocates the radio resource 31 to the terminal device 1300A, the terminal device 1300B, and the terminal device 1300C. The radio resource 31 is located over a part of the subband 21 in the frequency direction and over the subframe 11 in the time direction.

For example, the terminal device 1300A transmits a signal to the second unit 1200A, the terminal device 1300B transmits a signal to the second unit 1200B, and the terminal device 1300C transmits a signal to the second unit 1200C. These signals are desired signals in the

second units

1200A, 1200B, and 1200C, respectively. On the other hand, for example, the terminal device 1300B is located near the boundary between the coverage of the second unit 1200B and the coverage of the second unit 1200A. Therefore, the signal from the terminal device 1300B reaches the second unit 1200A. This signal can be an interference signal in the second unit 1200A. Further, for example, the terminal device 1300C is located in the vicinity of the boundary between the coverage of the second unit 1200C and the coverage of the second unit 1200A, and thus a signal from the terminal device 1300C reaches the second unit 1200A. This signal can be an interference signal in the second unit 1200A.

In particular, when SPS is applied to the terminal device 1300A, the terminal device 1300B, and the terminal device 1300C, the interference may continue for a long period.

In the third embodiment, for example, the terminal device 1300A, the terminal device 1300B, and the terminal device 1300C use frequency hopping. If the frequency hopping pattern of the terminal device 1300A is the same as the frequency hopping pattern of the terminal device 1300B and the terminal device 1300C, the interference in the second unit 1200A is not reduced. On the other hand, if the frequency hopping pattern of the terminal device 1300A is different from the frequency hopping patterns of the terminal device 1300B and the terminal device 1300C, the interference in the second unit 1200A can be reduced.

<< 3.2. Configuration of each node >>
The configuration of each node according to the third embodiment will be described with reference to FIGS.

<3.2.1. Configuration of First Unit 1100>
FIG. 16 is a block diagram illustrating an example of a schematic configuration of the first unit 1100 according to the third embodiment. Referring to FIG. 16, the first unit 1100 includes a unit communication unit 1110, a storage unit 1120, and a processing unit 1130.

(1) Unit communication unit 1110
The unit communication unit 1110 receives a signal from the second unit 1200 and transmits a signal to the second unit 1200.

(2) Storage unit 1120
The storage unit 1120 temporarily or permanently stores programs (commands) and parameters for the operation of the first unit 1100 and various data. The program includes one or more instructions for the operation of the first unit 1100.

(3) Processing unit 1130
The processing unit 1130 provides various functions of the first unit 1100. The processing unit 1130 includes a communication processing unit 1131. Note that the processing unit 1130 may further include other components than this component. In other words, the processing unit 1130 can perform operations other than the operation of this component.

For example, the processing unit 1130 (communication processing unit 1131) communicates with the second unit 1200 via the unit communication unit 1110.

For example, the processing unit 1130 (communication processing unit 1131) communicates with the terminal device 1300 via the unit communication unit 1110 (and the second unit 1200).

(4) Implementation Example The unit communication unit 1110 may be implemented by a network adapter and / or a network interface card. The storage unit 1120 may be implemented by a memory (for example, a nonvolatile memory and / or a volatile memory) and / or a hard disk or the like. The processing unit 1130 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The memory (storage unit 1120) may be included in the one or more processors, or may be outside the one or more processors.

The first unit 1100 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may execute the above program to perform the operation of the processing unit 1130 (the operation of the communication processing unit 1131). The program may be a program for causing the processor to execute the operation of the processing unit 1130 (the operation of the communication processing unit 1131).

Note that the first unit 1100 may be virtualized. That is, the first unit 1100 may be implemented as a virtual machine. In this case, the first unit 1100 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor and a memory and a hypervisor.

<3.2.2. Configuration of Second Unit 1200>
FIG. 17 is a block diagram illustrating an example of a schematic configuration of the second unit 1200 according to the third embodiment. Referring to FIG. 17, the second unit 1200 includes a unit communication unit 1210, a wireless communication unit 1220, a storage unit 1230, and a processing unit 1240.

(1) Unit communication unit 1210
The unit communication unit 1210 receives a signal from the first unit 1100 and transmits a signal to the first unit 1100.

(2) Wireless communication unit 1220
The wireless communication unit 1220 transmits and receives signals wirelessly. For example, the wireless communication unit 1220 receives a signal from the terminal device and transmits a signal to the terminal device.

(3) Storage unit 1230
The storage unit 1230 temporarily or permanently stores programs (commands) and parameters for the operation of the second unit 1200 and various data. The program includes one or more instructions for the operation of the second unit 1200.

(4) Processing unit 1240
The processing unit 1240 provides various functions of the second unit 1200. The processing unit 1240 includes a first communication processing unit 1241 and a second communication processing unit 1243. Note that the processing unit 1240 may further include other components other than these components. That is, the processing unit 1240 can perform operations other than the operations of these components.

For example, the processing unit 1240 (first communication processing unit 1241) communicates with the first unit 1100 via the unit communication unit 1210. For example, the processing unit 1240 (second communication processing unit 1243) communicates with a terminal device (for example, the terminal device 1300) via the wireless communication unit 1220.

(5) Implementation Example The unit communication unit 1210 may be implemented by a network adapter and / or a network interface card. The wireless communication unit 1220 may be implemented by an antenna, a radio frequency (RF) circuit, or the like, and the antenna may be a directional antenna. The storage unit 1230 may be implemented by a memory (for example, a nonvolatile memory and / or a volatile memory) and / or a hard disk or the like. The processing unit 1240 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The first communication processing unit 1241 and the second communication processing unit 1243 may be implemented by the same processor, or may be separately implemented by different processors. The memory (storage unit 1230) may be included in the one or more processors, or may be outside the one or more processors.

The second unit 1200 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may execute the program to perform the operation of the processing unit 1240 (operations of the first communication processing unit 1241 and the second communication processing unit 1243). The program may be a program for causing the processor to execute the operation of the processing unit 1240 (the operation of the first communication processing unit 1241 and the second communication processing unit 1243).

Note that the second unit 1200 may be virtualized. That is, the second unit 1200 may be implemented as a virtual machine. In this case, the second unit 1200 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor and a memory and a hypervisor.

<3.2.3. Configuration of Terminal Device 1300>
FIG. 18 is a block diagram illustrating an example of a schematic configuration of a terminal device 1300 according to the third embodiment. Referring to FIG. 18, the terminal device 1300 includes a wireless communication unit 1310, a storage unit 1320, and a processing unit 1330.

(1) Wireless communication unit 1310
The wireless communication unit 1310 transmits and receives signals wirelessly. For example, the wireless communication unit 1310 receives a signal from the base station and transmits a signal to the base station.

(2) Storage unit 1320
The storage unit 1320 temporarily or permanently stores programs (commands) and parameters for the operation of the terminal device 1300 and various data. The program includes one or more instructions for the operation of the terminal device 1300.

(3) Processing unit 1330
The processing unit 1330 provides various functions of the terminal device 1300. The processing unit 1330 includes a communication processing unit 1331. Note that the processing unit 1330 may further include other components other than this component. In other words, the processing unit 1330 can perform operations other than the operations of the constituent elements. Specific operations of the communication processing unit 1331 will be described in detail later.

For example, the processing unit 1330 (communication processing unit 1331) communicates with the base station via the wireless communication unit 1310.

(4) Implementation Example The wireless communication unit 1310 may be implemented by an antenna, a high frequency (RF) circuit, or the like. The storage unit 1320 may be implemented by a memory (for example, a nonvolatile memory and / or a volatile memory) and / or a hard disk or the like. The processing unit 1330 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The memory (storage unit 1320) may be included in the one or more processors, or may be outside the one or more processors. As an example, the processing unit 1330 may be implemented in the SoC.

The terminal device 1300 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may execute the program and perform the operation of the processing unit 1330 (the operation of the communication processing unit 1331). The program may be a program for causing the processor to execute the operation of the processing unit 1330 (the operation of the communication processing unit 1331).

<< 3.3. Technical features >>
The technical features of the third embodiment will be described with reference to FIGS. 19 and 20.

(1) Selection of Frequency Hopping Pattern The first unit 1100 (communication processing unit 1131) selects a frequency hopping pattern for the terminal device 1300 that communicates with the base station 1000. For example, the terminal device 1300 is a terminal device to which SPS is applied.

For example, the first unit 1100 (communication processing unit 1131) includes a first pattern for the terminal device 1300A that communicates with the second unit 1200A, a second pattern for the terminal device 1300B that communicates with the second unit 1200B, A third pattern for the terminal device 1300C communicating with the second unit 1200C is selected.

As much as possible, the first unit 1100 (communication processing unit 1131) may use the first pattern and the second pattern so that the first pattern, the second pattern, and the third pattern are different from each other. And the third pattern is selected.

In addition, since the number of frequency hopping patterns is limited, it may be difficult to make the frequency hopping patterns (used for terminal devices to which SPS is applied) completely different between the second units 1200. is there. Therefore, the same frequency hopping pattern may be used between the second units 1200 (for the terminal device 1300 to which SPS is applied). It is desirable to use different frequency hopping patterns between the second units 1200 as much as possible.

(2) Communication using frequency hopping pattern For example, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) communicates with the terminal device 1300 according to the frequency hopping pattern for the terminal device 1300. . Also, the terminal device 1300 (communication processing unit 1331) communicates with the base station 1000 according to the above pattern of the frequency hopping for the terminal device 1300.

For example, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) transmits control information related to the first pattern of the frequency hopping for the terminal device 1300A from the second unit 1200A to the terminal device 1300A. To do. The terminal device 1300A (communication processing unit 1331) receives the control information. The terminal device 1300A (communication processing unit 1331) transmits an uplink signal to the base station 1000 (second unit 1200A) according to the first pattern of the frequency hopping indicated by the control information. The base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) receives the uplink signal from the terminal device 1300A according to the first pattern of the frequency hopping.

For example, the control information is DCI, and the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) transmits the control information on the PDCCH. Alternatively, the control information may be an RRC message.

(3) Measurement For example, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) performs measurement on radio resources for SPS of the terminal device 1300A.

(3-1) First Example: Measurement of Received Power from Terminal Device As a first example, the measurement is a measurement of received power from the terminal device 1300A in the radio resource.

For example, the first frequency hopping pattern for the terminal device 1300A is different from the second frequency hopping pattern for the terminal device 1300B and the third frequency hopping pattern for the terminal device 1300C. In addition, it is assumed that long-term interference due to SPS does not become so great. Therefore, for example, in such a case, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) measures the received power from the terminal device 1300A in the radio resource for the SPS of the terminal device 1300A.

For example, the radio resource (where the measurement is performed) is a radio resource allocated for the SPS of the terminal device 1300A.

Specific Example of Measurement FIG. 19 is an explanatory diagram for explaining an example of measurement of the frequency hopping pattern and the received power in the third embodiment. Referring to FIG. 19,

radio resources

33 and 35 allocated to terminal apparatus 1300A by base station 1000,

radio resources

33 and 37 allocated to terminal apparatus 1300B by base station 1000, and terminal apparatus by base station 1000

Radio resources

33, 39 assigned to 1300C are shown. The terminal device 1300A transmits an uplink signal using the radio resource 33 and the radio resource 35 having the same frequency resource without performing frequency hopping. The terminal device 1300B performs frequency hopping in which the frequency offset is ¼ of the frequency domain of PUSCH, and transmits an uplink signal using the radio resource 33 and the radio resource 37. The terminal device 1300C performs frequency hopping in which the frequency offset is -1/4 of the frequency domain of PUSCH, and transmits the uplink signal using the radio resource 33 and the radio resource 39. For example, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) is not used by the terminal device 1300B and the terminal device 1300C, but is received from the terminal device 1300A in the radio resource 35 used by the terminal device 1300A. Measure power.

-Operation based on measurement result For example, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) changes the transmission power or the modulation and coding scheme (MCS) of the terminal device 1300A based on the measurement result. Decide what to do.

Thereby, for example, the terminal device 1300A can use more appropriate transmission power or modulation and coding scheme.

(3-2) Second Example: Measurement of Interference As a second example, the measurement may be measurement of interference from one or more other terminal devices in the radio resource.

For example, the first frequency hopping pattern for the terminal device 1300A is the same as the second frequency hopping pattern for the terminal device 1300B or the third pattern of frequency hopping for the terminal device 1300C. In some cases, it is assumed that long-term interference due to SPS may occur. Therefore, for example, in such a case, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) may use one or more other terminal devices (terminal device 1300B) in the radio resource for SPS of the terminal device 1300A. And / or interference from the terminal device 1300C) may be measured.

(The above measurement is performed) The radio resource may be a radio resource allocated for the SPS of the terminal device 1300A. Alternatively, the radio resource (where the measurement is performed) may be a radio resource to be allocated for the SPS of the terminal device 1300A.

The frequency hopping pattern for the one or more other terminal devices (for example, the terminal device 1300B and / or the terminal device 1300C) may be different from the frequency hopping pattern for the terminal device 1300A.

Specific Example of Measurement FIG. 20 is an explanatory diagram for describing an example of measurement of frequency hopping patterns and interference in the third embodiment. Referring to FIG. 20,

radio resources

33 and 35 allocated to terminal apparatus 1300A by base station 1000 (or

radio resources

33 and 35 to be allocated to terminal apparatus 1300A by base station 1000) are shown. In addition,

radio resources

33 and 37 allocated to the terminal device 1300B by the base station 1000 and

radio resources

33 and 35 allocated to the terminal device 1300C by the base station 1000 are shown. The terminal device 1300A does not transmit an uplink signal using the radio resource 33 and the radio resource 35. The terminal device 1300B performs frequency hopping in which the frequency offset is 1/4 of the frequency domain of PUSCH, and transmits an uplink signal to the second unit 1200B using the radio resource 33 and the radio resource 37. The terminal device 1300C transmits an uplink signal to the second unit 1200C using the radio resource 33 and the radio resource 35 having the same frequency resource without performing frequency hopping. First, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) performs interference (interference (received power) from the terminal device 1300B and interference from the terminal device 1300C) in the radio resource 33 in the second unit 1200A. (Sum of received power)) (hereinafter referred to as “first measurement”). Next, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) measures (hereinafter, “interference (received power) from the terminal device 1300C)” in the radio resource 35 in the second unit 1200A. Called "second measurement"). Then, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) subtracts the result of the second measurement from the result of the first measurement, so that the terminal device 1300B in the second unit 1200A The interference is calculated. Thus, the interference from each of the terminal device 1300B and the terminal device 1300C in the second unit 1200A is calculated.

-Operation based on measurement result The base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) may determine whether to continue the SPS of the terminal device 1300A based on the measurement result.

When the interference is small, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) may determine to continue the SPS of the terminal device 1300A.

When the interference is large, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) may decide to end the SPS of the terminal device 1300A (that is, switch to dynamic scheduling). Alternatively, when the interference is large, the base station 1000 (the communication processing unit 1131 or the second communication processing unit 1243) changes the radio resource for the SPS of the terminal device 1300A, or for the terminal device 1300A. It may be decided to change the frequency hopping pattern.

Thereby, for example, the terminal device 1300A can perform more desirable communication.

Here, the measurement in the radio resource for the SPS of the terminal device 1300A has been described, but the same measurement may be performed for the terminal device 1300B and the terminal device 1300C.

The third embodiment has been described above. Also in the third embodiment, the same modification as the second modification, the third modification, and the fourth modification of the first embodiment may be applied.

As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment. Those skilled in the art will appreciate that these embodiments are merely exemplary and that various modifications can be made without departing from the scope and spirit of the invention.

For example, the steps in the processing described in this specification do not necessarily have to be executed in time series in the order described in the sequence diagram. For example, the steps in the processing may be executed in an order different from the order described as the sequence diagram or may be executed in parallel. Also, some of the steps in the process may be deleted, and additional steps may be added to the process.

Also, one of a plurality of devices (or units) constituting the base station (for example, various communication processing units and / or information acquisition units) described in this specification (for example, various communication processing units and / or information acquisition units). The above apparatus (or unit) or a module for one of the plurality of apparatuses (or units) may be provided. An apparatus (for example, a module for the terminal apparatus) including the components (for example, a communication processing unit) of the terminal apparatus described in the present specification may be provided. In addition, a method including processing of the above-described components may be provided, and a program for causing a processor to execute the processing of the above-described components may be provided. Moreover, a non-transitory recording medium (Non-transitory computer readable medium) readable by a computer that records the program may be provided. Of course, such a device, module, method, program, and computer-readable non-transitory recording medium are also included in the present invention.

Some or all of the above embodiments may be described as in the following supplementary notes, but are not limited to the following.

(Appendix 1)
A first base station,
An information acquisition unit for acquiring hopping pattern control information related to a frequency hopping pattern for a terminal device;
A first communication processing unit for transmitting the hopping pattern control information to a second base station;
A first base station comprising:

(Appendix 2)
The first base station according to appendix 1, wherein the terminal device is a terminal device to which SPS (Semi-Persistent Scheduling) is applied.

(Appendix 3)
The first base station according to

Supplementary Note

1 or 2, wherein the terminal device is a terminal device that communicates with the first base station.

(Appendix 4)
The information acquisition unit acquires the hopping pattern control information and subframe information indicating a subframe in which the pattern of the frequency hopping is used,
The first communication processing unit transmits the hopping pattern control information and the subframe information to the second base station.
The first base station according to attachment 3.

(Appendix 5)
The first base station according to attachment 3 or 4, further comprising a second communication processing unit that selects the pattern of the frequency hopping.

(Appendix 6)
The first communication processing unit receives, from the second base station, other hopping pattern control information related to a frequency hopping pattern for another terminal device communicating with the second base station,
The second communication processing unit selects the pattern of the frequency hopping for the terminal device communicating with the first base station based on the other hopping pattern control information.
The first base station according to attachment 5.

(Appendix 7)
The first base station according to any one of appendices 1 to 6, further comprising a second communication processing unit that communicates with the terminal device according to the pattern of the frequency hopping.

(Appendix 8)
The terminal device is a terminal device to which SPS is applied,
The first base station further includes a second communication processing unit that performs measurement in radio resources for SPS of the terminal device,
8. The first base station according to any one of appendices 1 to 7.

(Appendix 9)
9. The first base station according to appendix 8, wherein the measurement is a measurement of interference from one or more other terminal devices in the radio resource.

(Appendix 10)
A second communication processing unit for determining whether to continue the SPS of the terminal device based on a result of the measurement,
A frequency hopping pattern for at least one of the one or more other terminal devices is different from the pattern of the frequency hopping for the terminal device;
The first base station according to attachment 9.

(Appendix 11)
The first base station according to appendix 8, wherein the measurement is a measurement of received power from the terminal device in the radio resource.

(Appendix 12)
The first base station according to supplementary note 11, further comprising: a second communication processing unit that determines whether to change a transmission power or a modulation and coding scheme of the terminal device based on a result of the measurement.

(Appendix 13)
The first base station according to

attachment

1 or 2, wherein the terminal device is a terminal device that communicates with the second base station.

(Appendix 14)
The first communication processing unit transmits a message including the hopping pattern control information to the second base station, and receives a response message to the message from the second base station. The first base station according to claim 1.

(Appendix 15)
The first base station according to attachment 14, wherein the response message indicates acceptance or rejection of the hopping pattern control information.

(Appendix 16)
16. The first base station according to any one of appendices 1 to 15, wherein the frequency hopping is uplink frequency hopping.

(Appendix 17)
The first base station according to Supplementary Note 16, wherein the frequency hopping is frequency hopping of a PUSCH (Physical Uplink Shared Channel).

(Appendix 18)
The first base station according to any one of appendices 1 to 15, wherein the frequency hopping is downlink frequency hopping.

(Appendix 19)
The first base station according to attachment 18, wherein the terminal device is a terminal device that uses NB-IoT (Narrow Band Internet of Things).

(Appendix 20)
20. The first base station according to any one of appendices 1 to 19, wherein the frequency hopping is intra-subframe frequency hopping.

(Appendix 21)
20. The first base station according to any one of appendices 1 to 19, wherein the frequency hopping is inter-subframe frequency hopping.

(Appendix 22)
A first communication processing unit that receives hopping pattern control information related to a frequency hopping pattern for a terminal device from a first base station;
A second communication processing unit that communicates with the terminal device based on the hopping pattern control information;
A second base station comprising:

(Appendix 23)
A terminal device,
A communication processing unit for communicating with the first base station or the second base station according to a frequency hopping pattern for the terminal device;
With
The first base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.
Terminal device.

(Appendix 24)
A method in a first base station, comprising:
Obtaining hopping pattern control information regarding a frequency hopping pattern for a terminal device;
Transmitting the hopping pattern control information to a second base station;
Including methods.

(Appendix 25)
In the first base station,
Obtaining hopping pattern control information regarding a frequency hopping pattern for a terminal device;
Transmitting the hopping pattern control information to a second base station;
That causes a processor to execute.

(Appendix 26)
In the first base station,
Obtaining hopping pattern control information regarding a frequency hopping pattern for a terminal device;
Transmitting the hopping pattern control information to a second base station;
A non-transitory recording medium readable by a computer having recorded thereon a program for causing a processor to execute.

(Appendix 27)
A method in a second base station, comprising:
Receiving, from the first base station, hopping pattern control information related to a frequency hopping pattern for the terminal device;
Communicating with the terminal device based on the hopping pattern control information;
Including methods.

(Appendix 28)
In the second base station,
Receiving, from the first base station, hopping pattern control information related to a frequency hopping pattern for the terminal device;
Communicating with the terminal device based on the hopping pattern control information;
That causes a processor to execute.

(Appendix 29)
In the second base station,
Receiving, from the first base station, hopping pattern control information related to a frequency hopping pattern for the terminal device;
Communicating with the terminal device based on the hopping pattern control information;
A non-transitory recording medium readable by a computer having recorded thereon a program for causing a processor to execute.

(Appendix 30)
A method in a terminal device,
Communicating with a first base station or a second base station according to a frequency hopping pattern for the terminal device;
Including
The first base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.
Method.

(Appendix 31)
In the terminal device,
Communicating with a first base station or a second base station according to a frequency hopping pattern for the terminal device;
Is a program that causes a processor to execute
The first base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.
program.

(Appendix 32)
In the terminal device,
Communicating with a first base station or a second base station according to a frequency hopping pattern for the terminal device;
Is a non-transitory recording medium readable by a computer that records a program for causing a processor to execute,
The first base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.
A computer-readable non-transitory recording medium.

This application claims priority based on Japanese Patent Application No. 2018-054651 filed on Mar. 22, 2018, the entire disclosure of which is incorporated herein.

In a mobile communication system, communication in a radio access network can be improved.

1, 2, 3

System

100, 200, 300, 600, 700

Base station

141, 241, 341, 620, 710 First

communication processing unit

143, 243, 343, 720 Second

communication processing unit

145, 245, 345, 610

Information acquisition unit

400, 800

Terminal device

431, 810 Communication processing unit 1000 Base station 1100 First unit 1200 Second unit 1300 Terminal device

Claims

A first base station,
An information acquisition unit for acquiring hopping pattern control information related to a frequency hopping pattern for a terminal device;
A first communication processing unit for transmitting the hopping pattern control information to a second base station;
A first base station comprising:
The first base station according to claim 1, wherein the terminal device is a terminal device to which SPS (Semi-Persistent Scheduling) is applied.
The first base station according to claim 1 or 2, wherein the terminal device is a terminal device that communicates with the first base station.
The information acquisition unit acquires the hopping pattern control information and subframe information indicating a subframe in which the pattern of the frequency hopping is used,
The first communication processing unit transmits the hopping pattern control information and the subframe information to the second base station.
The first base station according to claim 3.
The first base station according to claim 3 or 4, further comprising a second communication processing unit that selects the pattern of the frequency hopping.
The first communication processing unit receives, from the second base station, other hopping pattern control information related to a frequency hopping pattern for another terminal device communicating with the second base station,
The second communication processing unit selects the pattern of the frequency hopping for the terminal device communicating with the first base station based on the other hopping pattern control information.
The first base station according to claim 5.
The first base station according to any one of claims 1 to 6, further comprising a second communication processing unit that communicates with the terminal device according to the pattern of the frequency hopping.
The terminal device is a terminal device to which SPS is applied,
The first base station further includes a second communication processing unit that performs measurement in radio resources for SPS of the terminal device,
The first base station according to any one of claims 1 to 7.
The first base station according to claim 8, wherein the measurement is a measurement of interference from one or more other terminal devices in the radio resource.
A second communication processing unit for determining whether to continue the SPS of the terminal device based on a result of the measurement,
A frequency hopping pattern for at least one of the one or more other terminal devices is different from the pattern of the frequency hopping for the terminal device;
The first base station according to claim 9.
The first base station according to claim 8, wherein the measurement is a measurement of received power from the terminal device in the radio resource.
The first base station according to claim 11, further comprising: a second communication processing unit that determines whether to change transmission power or a modulation and coding scheme of the terminal device based on a result of the measurement.
The first base station according to claim 1 or 2, wherein the terminal device is a terminal device that communicates with the second base station.
The first communication processing unit transmits a message including the hopping pattern control information to the second base station, and receives a response message to the message from the second base station. The 1st base station of any 1 paragraph.
The first base station according to claim 14, wherein the response message indicates acceptance or rejection of the hopping pattern control information.
The first base station according to any one of claims 1 to 15, wherein the frequency hopping is uplink frequency hopping.
The first base station according to claim 16, wherein the frequency hopping is PUSCH (Physical Uplink Shared Channel) frequency hopping.
The first base station according to any one of claims 1 to 15, wherein the frequency hopping is downlink frequency hopping.
The first base station according to claim 18, wherein the terminal device is a terminal device using NB-IoT (Narrow Band Internet of Things).
The first base station according to any one of claims 1 to 19, wherein the frequency hopping is intra-subframe frequency hopping.
The first base station according to any one of claims 1 to 19, wherein the frequency hopping is inter-subframe frequency hopping.
A first communication processing unit that receives hopping pattern control information related to a frequency hopping pattern for a terminal device from a first base station;
A second communication processing unit that communicates with the terminal device based on the hopping pattern control information;
A second base station comprising:
A terminal device,
A communication processing unit for communicating with the first base station or the second base station according to a frequency hopping pattern for the terminal device;
With
The first base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.
Terminal device.
A method in a first base station, comprising:
Obtaining hopping pattern control information regarding a frequency hopping pattern for a terminal device;
Transmitting the hopping pattern control information to a second base station;
Including methods.
In the first base station,
Obtaining hopping pattern control information regarding a frequency hopping pattern for a terminal device;
Transmitting the hopping pattern control information to a second base station;
That causes a processor to execute.
In the first base station,
Obtaining hopping pattern control information regarding a frequency hopping pattern for a terminal device;
Transmitting the hopping pattern control information to a second base station;
A non-transitory recording medium readable by a computer having recorded thereon a program for causing a processor to execute.
A method in a second base station, comprising:
Receiving, from the first base station, hopping pattern control information related to a frequency hopping pattern for the terminal device;
Communicating with the terminal device based on the hopping pattern control information;
Including methods.
In the second base station,
Receiving, from the first base station, hopping pattern control information related to a frequency hopping pattern for the terminal device;
Communicating with the terminal device based on the hopping pattern control information;
That causes a processor to execute.
In the second base station,
Receiving, from the first base station, hopping pattern control information related to a frequency hopping pattern for the terminal device;
Communicating with the terminal device based on the hopping pattern control information;
A non-transitory recording medium readable by a computer having recorded thereon a program for causing a processor to execute.
A method in a terminal device,
Communicating with a first base station or a second base station according to a frequency hopping pattern for the terminal device;
Including
The first base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.
Method.
In the terminal device,
Communicating with a first base station or a second base station according to a frequency hopping pattern for the terminal device;
Is a program that causes a processor to execute
The first base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.
program.
In the terminal device,
Communicating with a first base station or a second base station according to a frequency hopping pattern for the terminal device;
Is a non-transitory recording medium readable by a computer that records a program for causing a processor to execute,
The first base station is a base station that transmits hopping pattern control information related to the pattern of the frequency hopping to the second base station.
A computer-readable non-transitory recording medium.